Hi Stiofan,
they told me this:
“Please change Child theme to main theme and see if it fixes the problem.
I guess that you override some old files into your child theme which you need to change and use new files.
In general please do as follows:
Would you please do tests below and give us the result:
1- Change from Child Theme (If you use one) to Main theme and see if it fixes the problem.
2- Deactivate all 3rd party plugins and see if it fixes the problem.
3- Go to Theme Options -> Advanced Custom JS (and test Custom CSS) and remove any code (If you have code there) temporarily and see if it fixes the problem.
4- Please change default theme of your website to something different for example twenty fourteen, and see if the problem is still there. (Keep Visual Composer active on this case.)
I changed to the Main theme and it works ok. What does this mean? Should I use the Main theme or can I change something in the Child to keep it working?
Thank you,
Tomas